Recommend a fitness tracker

Frowzy

I'm looking to purchase a fitness tracker as a birthday present for a family member who's big into his fitness training.

I'm considering the Fitbit Charge HR Monitor but was hoping that someone here may be using it or something else that they can recommend.
It needs to:
- be waterproof (enough for swimming)
- monitor heart rate
- monitor sleep
- I don't know if any of these gadgets will monitor exertion while doing martial arts??

Any advice for a non techie Mammy looking for a good present for her son is most appreciated. I wouldn't say money isn't an issue but I had expected to spend 300- 400 for something that will last.
Thanks in advance!!!!

Carlos Orange

The Charge HR is water resistant but not water proof so it would be out at the first hurdle unless you want to buy one that a 3rd party has water proofed.

https://help.fitbit.com/articles/en_US/Help_article/Can-I-swim-or-shower-with-my-tracker

I love my Charge HR but I'm never in water. I do hear a good bit of chatter various places about build quality and them not lasting (Fitbit seem to do a lot of free replacements). Mine is perfectly find but it is only about 8 months old.